/* ===== えいごポケット style.css ===== */

:root{
  --bg1:#bfeff0;
  --card:#ffffff;
  --ink:#203246;
  --muted:#6b7a8a;
  --blue:#1f66c1;
  --orange:#ff8a00;
  --orange-dark:#e37500;
  --line:#e8edf3;

  --shadow: 0 10px 22px rgba(20,40,80,.12);
  --shadow-press: 0 4px 10px rgba(20,40,80,.18);
  --radius: 22px;
  --radius-sm: 16px;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }

body{
  font-family: system-ui, -apple-system, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  color:var(--ink);
  background: linear-gradient(180deg, var(--bg1), #d9f6e6 55%, #e7fbff);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  line-height: 1.45;
}

.page{
  max-width: 760px;
  margin: 0 auto;
  padding: 18px 14px 34px;
}

/* ===== Title card ===== */
.title-card{
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(255,255,255,.65);
  border-radius: var(--radius);
  padding: 18px 16px 16px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.app-title{
  margin: 4px 0 6px;
  font-size: 34px;        /* ←少し小さめ */
  letter-spacing: .04em;
  text-align: center;
  color: #2e78d6;
  font-weight: 1000;
}

.app-subtitle{
  margin: 0 0 14px;
  text-align:center;
  color:#334455;
  font-weight: 800;
}

.stage-area{
  margin-top: 10px;
}
.title-divider{
  margin: 6px 0 10px;
  border-bottom: 1px solid rgba(32, 50, 70, 0.12);
}
.stage-label{
  color: var(--muted);
  font-weight: 500;
  margin: 2px 4px 10px;
}

/* ===== ステージ横スライド（維持） ===== */
.stage-strip{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding: 2px 2px 10px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

/* ===== Buttons / pressed feel ===== */
button{
  font-family: inherit;
  -webkit-tap-highlight-color: transparent;
}

.stage-btn,
.nav-btn,
.mini-test-btn,
.opt{
  border: 1px solid #d6e2f1;
  background: #ffffff;
  border-radius: 999px;
  padding: 12px 12px;
  font-weight: 1000;
  color: #2b5ea7;
  box-shadow: 0 8px 18px rgba(20,40,80,.10);
  transform: translateY(0);
  transition: transform .08s ease, box-shadow .08s ease, filter .08s ease, background .12s ease;
}

.stage-btn{
  flex: 0 0 auto;
  min-width: 140px;
  min-height: 46px;
  display:flex;
  align-items:center;
  justify-content:center; /* 中央寄せ */
  text-align:center;
}

.stage-btn .stage-name{
  font-size: 16px;
  line-height: 1.1;
}

.stage-btn:active,
.nav-btn:active,
.mini-test-btn:active,
.opt:active{
  transform: translateY(2px) scale(.99); /* 押した感 */
  box-shadow: var(--shadow-press);
  filter: brightness(.98);
}

.stage-btn:focus-visible,
.nav-btn:focus-visible,
.mini-test-btn:focus-visible,
.opt:focus-visible{
  outline: 3px solid rgba(31,102,193,.25);
  outline-offset: 2px;
}

.stage-btn.active{
  border-color: rgba(31,102,193,.35);
  background: linear-gradient(180deg, #eef6ff, #ffffff);
  color: #184b92;
}

/* ===== Current stage label ===== */
.current-stage{
  margin: 14px 2px 10px;
  font-weight: 1000;
  color: #1c4f9a;
  font-size: 20px;
  letter-spacing: .02em;
}

/* ===== Learn card ===== */
.learn-card{
  margin-top: 10px;
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(255,255,255,.65);
  border-radius: var(--radius);
  padding: 14px 14px 16px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.learn-top{
  display:flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
}

.progress{
  font-weight: 1000;
  color: #6a7b8a;
}
.tap-hint{
  font-weight: 900;
  color: #6a7b8a;
}

/* ===== Flip card ===== */
.flip-card{
  width: 100%;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  perspective: 1200px;
  -webkit-perspective: 1200px;
}

.flip-inner{
  position: relative;
  width: 100%;
  height: 240px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  border: 1px solid var(--line);
  box-shadow: 0 8px 18px rgba(20,40,80,.10);
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  transform: rotateY(0deg) translateZ(0);
  -webkit-transform: rotateY(0deg) translateZ(0);
  will-change: transform;
  transition: transform .5s cubic-bezier(.2,.9,.2,1);
  -webkit-transition: transform .5s cubic-bezier(.2,.9,.2,1);
  overflow: hidden; /* はみ出し対策 */
}

.flip-inner.is-flipped,
.flip-card.is-flipped .flip-inner{
  transform: rotateY(180deg) translateZ(0);
  -webkit-transform: rotateY(180deg) translateZ(0);
}

.flip-face{
  position:absolute;
  inset:0;
  display:flex;
  flex-direction: column;
  justify-content:center;
  align-items:center;
  padding: 18px 16px;
  /* iOS Safari では backface-visibility: hidden が有効だと、裏面を180deg回転させても
     描画自体が抑制されるケースがあるため、可視状態にして opacity/visibility で制御する */
  backface-visibility: visible;
  -webkit-backface-visibility: visible;
  transform: rotateY(0deg) translateZ(0);
  -webkit-transform: rotateY(0deg) translateZ(0);
  transition: opacity .3s ease, visibility .3s ease;
}

/* 表 */
.flip-front{
  transform: rotateY(0deg);
  -webkit-transform: rotateY(0deg);
  -webkit-backface-visibility: hidden;  /* ←追加 */
  opacity: 1;
  visibility: visible;
}

/* 裏 */
.flip-back{
  transform: rotateY(180deg);
  -webkit-transform: rotateY(180deg);
  /* 180deg 付与でカード本体の回転と合成し、裏面テキストを正面向きにする。 */
  backface-visibility: visible;
  -webkit-backface-visibility: visible;
  opacity: 0;
  visibility: hidden;
}

.flip-card.is-flipped .flip-front,
.flip-inner.is-flipped .flip-front{
  opacity: 0;
  visibility: hidden;
}

.flip-card.is-flipped .flip-back,
.flip-inner.is-flipped .flip-back{
  /* Safari などで裏面が真っ白になるのを防ぐため、全体の 180deg 回転と組み合わせて正面を向かせる */
  transform: rotateY(180deg);
  -webkit-transform: rotateY(180deg);
  opacity: 1;
  visibility: visible;
}

/* 直接クラスで切り替えて backface が出ない端末でも確実に表示する */
.flip-face.face-visible{
  opacity: 1 !important;
  visibility: visible !important;
}

.flip-face:not(.face-visible){
  opacity: 0 !important;
  visibility: hidden !important;
}

.front-english{
  /* 小学生でも読みやすい “丸み寄り” のフォントスタック（外部フォントなし） */
  font-family: ui-rounded, "SF Pro Rounded", "Hiragino Maru Gothic ProN", "Arial Rounded MT Bold", "Trebuchet MS", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", "Yu Gothic", sans-serif;

  /* 長いフレーズでもはみ出さない（端末幅に合わせて可変） */
  font-size: clamp(28px, 8.2vw, 52px);
  font-weight: 900;
  letter-spacing: .01em;
  color:#111;
  text-align:center;
  line-height: 1.12;

  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
  hyphens: auto;
}

.front-kana{
  margin-top: 10px;

  /* カタカナ読み：目立ちすぎない薄グレー＋細め */
  font-family: ui-rounded, "SF Pro Rounded", "Hiragino Maru Gothic ProN", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", "Yu Gothic", sans-serif;
  font-size: clamp(14px, 4.4vw, 18px);
  font-weight: 600;
  color: var(--muted);
  text-align:center;
  line-height: 1.25;

  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.back-japanese{
  font-family: ui-rounded, "SF Pro Rounded", "Hiragino Maru Gothic ProN", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", "Yu Gothic", sans-serif;
  font-size: clamp(26px, 7.2vw, 44px);
  font-weight: 900;
  color:#111;
  text-align:center;
  line-height: 1.18;

  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
  hyphens: auto;
}

.nav-row{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.nav-btn{
  padding: 14px 14px;
  border-radius: 18px;
  font-size: 18px;
  font-weight: 1000;
}

.nav-prev{
  background: linear-gradient(180deg, #f3f3f3, #ffffff);
  color:#333;
}
.nav-next{
  border-color: rgba(255,138,0,.35);
  background: linear-gradient(180deg, var(--orange), var(--orange-dark));
  color:#fff;
  box-shadow: 0 10px 22px rgba(255,138,0,.26);
}
.nav-next:active{
  box-shadow: 0 6px 14px rgba(255,138,0,.28);
}
.nav-next:disabled,
.nav-next.is-cooling{
  opacity: .65;
  cursor: not-allowed;
  box-shadow: none;
}

/* ===== Mini test area ===== */
.hidden{ display:none !important; }

#mini-test-area{
  margin-top: 14px;
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(255,255,255,.65);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

#mini-test-area .mini-test-msg{
  margin: 0 0 10px;
  font-weight: 900;
  color: #30445c;
}

#remaining-to-test{
  font-weight: 1000;
  color:#1c4f9a;
  margin: 0 0 10px;
}

.mini-test-btn{
  width: 100%;
  border-radius: 18px;
  padding: 16px 14px;
  font-size: 22px;
  color:#1a1a1a;
  background: linear-gradient(180deg, #ffd978, #ffc44f);
  border-color: rgba(0,0,0,.06);
  box-shadow: 0 12px 22px rgba(120,80,10,.15);
}
.mini-test-btn:active{
  box-shadow: 0 6px 14px rgba(120,80,10,.18);
}

#mini-test-area .mini-test-btn{
  margin-top: 6px;
}

/* ===== Stamp card (existing IDs) ===== */
#today-stamps, #total-stamps, #rank-title, #rank-level{
  font-weight: 1000;
}

.stamp-card{
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.stamp-box{
  background: linear-gradient(180deg, #fff2e6, #ffe0c2);
  border: 1px solid rgba(255,180,120,.6);
  border-radius: var(--radius);
  padding: 12px 14px;
  box-shadow: 0 12px 24px rgba(255,140,60,.12);
  backdrop-filter: blur(4px);
}

.stamp-title{
  margin: 0 0 8px;
  font-weight: 900;
  color: #8a4a00;
}

.stamp-stars{
  font-size: 22px;
  letter-spacing: 4px;
  color: #f2a100;
  -webkit-text-stroke: 1px #ffffff;
  text-shadow:
    0 1px 2px rgba(0, 0, 0, 0.24),
    0 0 6px rgba(255, 255, 255, 0.7);
}

.stamp-total-row{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.stamp-total-num{
  font-size: 26px;
  font-weight: 1000;
  color: #b14f00;
}

.stamp-unit{
  margin-left: 4px;
  font-size: 16px;
  color: #8a4a00;
}

.stamp-badges{
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: linear-gradient(180deg, #fff8eb, #ffe1b8);
  color: #7a3b00;
  font-weight: 900;
  border: 1px solid rgba(180,90,0,.26);
}

.badge-level{
  background: linear-gradient(180deg, #ffe0b6, #ffb55c);
  color: #6a3300;
  border-color: rgba(160,90,0,.32);
}

/* ===== Overlay / quiz ===== */
#test-overlay.hidden{ display:none; }
#test-overlay{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 12px;
  z-index: 2000;
}

.test-modal{
  width: min(720px, 94vw);
  max-height: min(80vh, 640px);
  background: #ffffff;
  border-radius: 20px;
  border: 1px solid rgba(0,0,0,.06);
  box-shadow: 0 22px 52px rgba(0,0,0,.26);
  overflow: hidden;
  display:flex;
  flex-direction: column;
  position: relative;
}

.bonus-overlay.hidden{ display:none; }
.bonus-overlay{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.35);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  z-index: 1800;
}
.bonus-modal{
  width: min(520px, 94vw);
  background: #ffffff;
  border-radius: 20px;
  box-shadow: 0 18px 42px rgba(0,0,0,.22);
  border: 1px solid rgba(0,0,0,.05);
  padding: 20px 18px 18px;
  text-align: center;
}
.bonus-title{
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 1000;
  color: #234169;
  line-height: 1.4;
}
.bonus-actions{
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}
.bonus-btn{
  min-width: 140px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid #d6e2f1;
  background: linear-gradient(180deg, #f8fbff, #f0f4ff);
  color: #1b3a6a;
  font-weight: 1000;
  box-shadow: 0 8px 18px rgba(20,40,80,.12);
}
.bonus-yes{
  background: linear-gradient(180deg, #ffd978, #ffc44f);
  color: #1d2e3f;
  border-color: rgba(160,110,10,.26);
}
.bonus-no{
  background: linear-gradient(180deg, #f1f5ff, #e1e9ff);
}

.test-head{
  padding: 12px 14px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  background: linear-gradient(180deg, #f6f8ff, #eef4ff);
  border-bottom: 1px solid rgba(0,0,0,.04);
}
.test-title{
  margin: 0;
  font-size: 18px;
  font-weight: 1000;
  color: #143b78;
}

.test-body{
  padding: 12px 14px 6px;
  overflow-y: auto;
  flex: 1 1 auto;
}

.test-result{
  margin: 0 auto 10px;
  width: min(480px, 100%);
  text-align: center;
  font-family: "BIZ UDPGothic", "M PLUS Rounded 1c", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 20px;
  font-weight: 1000;
  letter-spacing: .06em;
  color: #0f2f63;
  background: linear-gradient(180deg, #f9faff, #dfe9ff);
  border: 2px solid rgba(31,102,193,.28);
  border-radius: 16px;
  padding: 8px 10px;
  box-shadow: 0 10px 26px rgba(0,30,80,.14);
}
.test-result.correct{
  color: #0f3b23;
  background: linear-gradient(180deg, #e5f9ed, #c6f1d8);
  border-color: rgba(23,143,94,.42);
  text-shadow: 0 1px 0 #ffffff;
}
.test-result.incorrect{
  color: #5a1d1d;
  background: linear-gradient(180deg, #fff1f1, #ffd9d9);
  border-color: rgba(200,40,40,.28);
}

  .qbox{
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 12px 26px rgba(0,0,0,.14);
    padding: 12px 12px 12px;
    border: 1px solid rgba(0,0,0,.05);
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .qtitle{
    font-weight: 1100;
    color: #173a70;
    line-height: 1.35;
    font-size: 19px; /* 問題文を少しコンパクトに */
    margin: 0;
  }

  /* options buttons inside modal */
  .opt{
    width: 100%;
    text-align: left;
    border-radius: 12px;
    padding: 10px 11px;
    font-size: 17px;
    color: #1b2b3c;
    border: 1px solid #dbe6f3;
    background: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 12px rgba(20,40,80,.10);
  }
.opt input:disabled{
  filter: grayscale(.1);
}
.opt.is-selected{
  border-color: rgba(31,102,193,.45);
  box-shadow: 0 6px 16px rgba(31,102,193,.16);
}
.opt.is-correct{
  background: linear-gradient(180deg, #e9fbf0, #d6f5e4);
  border-color: rgba(23,143,94,.32);
  color: #0f3b23;
}
.opt.is-incorrect{
  background: linear-gradient(180deg, #fff3f3, #ffe0e0);
  border-color: rgba(200,40,40,.22);
}

.answer-summary{
  margin-top: 6px;
  padding-top: 10px;
  border-top: 1px dashed #d4dded;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.summary-row{
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.speak-row{ justify-content: flex-end; }
.summary-label{
  font-weight: 900;
  color: #30445c;
  font-size: 15px;
}
.answer-pill{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 12px;
  background: #f3f6fc;
  border: 1px solid #d6e2f1;
  color: #12335d;
  font-weight: 900;
  line-height: 1.25;
}
.answer-pill-correct{
  background: #e6f7ec;
  border-color: rgba(23,143,94,.32);
  color: #0f3b23;
}
.speak-btn{
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid #d6e2f1;
  background: linear-gradient(180deg, #f0f6ff, #e4edff);
  color: #1b3a6a;
  font-weight: 1000;
  box-shadow: 0 6px 14px rgba(20,40,80,.12);
}
.opt input{
  width: 18px;
  height: 18px;
  accent-color: var(--blue);
  flex: 0 0 auto;
}

  .test-foot{
    padding: 10px 14px 14px;
    border-top: 1px solid rgba(0,0,0,.04);
    background: linear-gradient(180deg, #f9fbff, #f0f4ff);
  }

  #test-submit{
    width: 100%;
    border-radius: 14px;
    padding: 12px 12px;
    font-size: 17px;
    font-weight: 1000;
    color: #1b2b3c;
    border: 1px solid rgba(0,0,0,.06);
    background: linear-gradient(180deg, #ffd978, #ffc44f);
    box-shadow: 0 10px 20px rgba(120,80,10,.15);
  }
#test-submit:active{
  transform: translateY(1px);
  box-shadow: 0 6px 14px rgba(120,80,10,.18);
}

/* close button (if exists) */
#test-close{
  position: absolute;
  top: 10px;
  right: 10px;
  border-radius: 999px;
  padding: 8px 10px;
  border: 1px solid rgba(255,255,255,.4);
  background: rgba(255,255,255,.92);
  font-weight: 1000;
  box-shadow: 0 10px 24px rgba(0,0,0,.16);
}
#test-close:active{
  transform: translateY(1px);
  box-shadow: 0 6px 14px rgba(0,0,0,.18);
}

/* ===== Toast ===== */
.toast{
  position: fixed;
  left: 50%;
  top: 46%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: min(520px, 92vw);
  justify-content: center;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(23, 52, 94, 0.96);
  color: #ffffff;
  font-weight: 900;
  box-shadow: 0 14px 30px rgba(0,0,0,.26);
  border: 1px solid rgba(255,255,255,.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
  z-index: 3000;
}

.toast.show{
  opacity: 1;
  pointer-events: auto;
}

.toast-text{
  white-space: pre-wrap;
  font-size: 16px;
  text-align: center;
}

.toast-close{
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 999px;
  padding: 6px 10px;
  background: rgba(255,255,255,.16);
  color: #ffffff;
  font-weight: 900;
  box-shadow: 0 4px 10px rgba(0,0,0,.25);
}

.toast-close:active{
  transform: translateY(1px);
}

/* ===== おうちのかたへ：目立たせすぎない ===== */
.info-card{
  margin-top: 14px;
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(255,255,255,.65);
  border-radius: var(--radius);
  padding: 16px 14px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.info-title{
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 900;
  color: var(--muted);
}

.info-list{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-weight: 600;
  line-height: 1.55;
}

/* ===== Responsive tweaks ===== */
@media (max-width: 420px){
  .app-title{ font-size: 30px; }
  .current-stage{ font-size: 22px; }
  .flip-inner{ height: 230px; }
}

@media (max-width: 480px){
  .test-modal{ max-height: 82vh; border-radius: 18px; }
  .test-head{ padding: 10px 12px; }
  .test-title{ font-size: 17px; }
  .test-body{ padding: 10px 12px 6px; }
  .qtitle{ font-size: 18px; }
  .opt{ padding: 9px 10px; font-size: 16px; }
  #test-submit{ padding: 11px 12px; font-size: 16px; border-radius: 12px; }
  .toast{ top: 50%; }
}

/* ===== 共有フッター：中央寄せ（footer.html側の要素にも効かせる） ===== */
#shared-footer,
.shared-footer{
  margin-top: 14px;
  text-align: center;
}

#shared-footer *{
  text-align: center;
}

/* iPhone Safariの安全領域（下部ホームバー）対策 */
@supports (padding: max(0px)) {
  .page{
    padding-bottom: max(28px, env(safe-area-inset-bottom));
  }
}